Flushing device.



C. W. DARROW.

FLUsmNG DEVICE.

APPLICATION FILED AUG. 8, 1912.

Patented Aug. 4, 1914.

wbbnwwo CHARLES W. DARROW, OF GLENWOOD SPRINGS, COLORADO.

FLUSHING- DEVICE.

Specification of Letters Patent.

, Application led August 8, 1912.

Patented Auf. 4:, 1914. serial No. 714,077.

To all whom 'it may concern Be it known that I, CHARLES l/V. Dixnnow, of Glenwood Springs, in the county of G'arlield and State oi Colorado, have invented certain new and use'lul Improvements in Flushing Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

The primary object of this invention is to provide a flushing` device which, while noiseless and positive in operation, will be capable of being easily operated.

In the accompanying` drawings, Figure 1 is view in elevation showing a toilet hopper and tank with my improvements, Fig. 2 is an enlarged vertical sectional view. Fig. 3 shows a slight modification.

Referring to the drawings, 1 designates a casing having at one side, at the top, a water inlet 2, and in line therewith a water outlet 3. The casing bottom 4 is detachably secured thereto and is provided with a central restricted opening 5 into which opens a by-pass 6 of a water supply-pipe 7. This supply pipe is shown in Fig. 1, as opening' into an air-tight reservoir S, its passage being contracted at 9. The reservoir at its lower end is connected by a pipe 10 to inlet 2 of the casing. W'hen `the reservoir is not required supply pipe 7 may lead direct to casing 1, but in both instances the by-pass from the source of supply into the casing is independent of the water inlet 2.

The main valve of the device, that is, the instrumentality 12 which controls the outlet of the water from the flushing device, is shown in the form of a disk which has a piston-like fit within the casing. Its raised central portion, or valve proper, is designed to seat against the lower end of the vertical centrallyarranged tubular portion of the outlet, and through this portion extends upwardly a guide sleeve 13 which fits in an extension of the casing. The valve seat on the lower end of the centrally arranged tubular portion of the outlet is on a plane beneath that of the inlet and the outlet so that both when said valve is seated and unseated it will be subjected to water pressure on both its upper and lower faces. The sleeve 13 has water outlet ports 14, and alined with such sleeve is a hollow boss 15 which depends from the valve.

16 designates a second valve which serves two functions, rst, it relieves the pressure by which the main valve is held to its seat, and secondly, it aids in unseating such valve by engagement with a cross-pin 17 mounted in boss 15. This second valve normally closes the passageway from that portion of casing 1 beneath the main valve through the guide sleeve, being normally seated over the opening between the boss and the sleeve and beingwithin the plane of the lower face of the disk-portion of the main valve. The second or relief valve is mounted on the lower end oi' a rod 18 which extends longitudinally through sleeve 13 and has on its upper end a knob 19. A spring 20 holds valve 16 to its seat.

Normally, the pressure of the water; within the casing, beneath the main valve, tends to hold such valve to its seat, and likewise the second or relief valve, but when such pressure is relieved, the water pressure above, being in excess, acting downwardly on the main valve, forces it from its seat and permits a sullicient quantity of water from reservoir 8 and supply` pipe 7 to low through opening 3 to effect a complete flushing. This under pressure is relieved by unseating valve 16, which in turn effects the initial unseating of the main valve. The valve 16 being unseated, its further downward movement will be in conjunction with valve 12, and said valve 16 is re-seated by spring 2O coupled with the water pressure beneath by which it is held to its seat. When the flushing operation is completed, and valve 16 is seated, the lower portion of the casing begins to refill, the water flowing through the restricted opening 5 slowly 'forcing valve 12, new operating as a piston, to its seat. The slow return movement of the valve 12 allows ample time for the flushing to be completed, and as the valve approaches its seat, the diminishing water flow seals the closet hopper.

The opening operation requires but slight force, being only such as is necessary to overcome the resistance to the water pressure beneath valve 16, which latter is of relatively small area, and this valve being unseated, the opening of valve 12 is effected by water pressure, aided if need be, by continued downward force applied to knob 19.

The water supply required for operation may be obtained, as stated, from supply pipe 7, connecting with reservoir 8 through a contracted passage 9, partly filling the resntf-ll ervoir wherein the air will be compressed, thus affording an ample supply for flushing through the outlet pipe l0. The water passing through the by-pass 6 serves to close the valves and hold them seated, and the passage through said by-pass is not interfered with by the main flow through inlet 2. The contracted passage 9 is suiicient to cause the water pressure in the lower part of the casing to close valve 12, after liushing, notwithstanding the loss of pressure in the reseriy oir. The restricted opening 5 reduces the flow into the lower part of the casing to etiiect a slow closing of valve 12 without a shock.

ylhe operation of this device is noiseless, both while flushing and filling the air tight reservoir. For the purpose of retaining in the latter, the maximum quantity and pressure of water obtainable in connection with a 'fluctuating supply pressure, a check valve 2l may be used, and instead of having the contracted opening formed in the bottom of the device, a cock 22 having a contracted port may be substituted, as shown in Fig. 3.

I claim as my invention:

1. ln combination with a water supply pipe, a flushing device comprising a casing having an inlet and an outlet, said inlet being connected to said supply-pipe, said outlet having a centrally-arranged tubular portion terminating at its lower end in a valve seat, such valve seat being beneath the plane of the inlet and the plane of the outlet, a valve having a peripheral enlargement `of disk-like formation normally held against said seat by water pressure within said casing beneath said valve acting on its lower face, said valve being subjected to water pressure on both its upper and lower faces both when seated and unseated, a Aby-pass leading from said supply pipe to said casing` independent of the inlet to supply water to act directly against the lower face of said valve to hold it seated, a second valve normally seated in the first mentioned valve centrally of said tubular portion, a push rod extending downwardly through said tubular portion for operating said second valve, and a stop depending from the under face y of the first valve and with which said second valve may engage for eiecting the unseating of said first valve.

Q. In combination with a water supply pipe, a flushing device comprising a casing having an inlet and an out-let, said inlet be ing connected to said supply-pipe, said outlet having a centrally-arranged tubularportion terminating at its lower end in a valve seat, said valve seat being beneath the plane of the inlet and the plane of the outlet, a valve having a peripheral enlargement of disk-like formation normallyA held against said seat by water pressure within said casing beneath said valve acting on its lower face, said valve being subjected to water pressure on both its upper and lower faces both when seated and unseated, a by-pass leading from said supply-pipe to said casing independent of the inlet to supply water to act directly against the lower face of said valve to hold it seated, a second valve normally seated in the first mentioned valve centrally of said tubular portion, a push rod extending downwardly through said tubular portion for operating said second v alve, a sleeve extending upwardly from said irst valve through said tubular portion oi the outlet, said sleeve havingescape ports therein opening into said outlet, and a stop depending` from the under face of the first valve and with which said second valve may engage for effecting the unseating of said iirst valve.

In testimony whereof, I have rsigned this specification in they presence of two subscribing witnesses.

CHARLES W. DARROW.

Witnesses:

JOHN L. NOONAN, TWILLIAM CRos's.

Copies o' this patent may' be obtained for ve cents each, by addressing the Gammssone of` Patents; Washington, D. 61;, 

